#linuxcnc Logs

Dec 12 2021

#linuxcnc Calendar

12:31 AM Bleepshop: OK, that's funny. I just had to go retrieve my field electrical kit from the car and my good wire cutters from the bathroom where I was trimming my toenails.
12:42 AM IntoxicatedHippo: I have a bunch of electronics I've built for a machine that are all connected to HAL pins (flow rate sensor, stepper drivers, etc.), what's the right way to ensure that linuxcnc is essentially locked out when not all conditions for the machine to run correctly are met? (coolant not flowing, stepper brakes on, steppers inhibited with external
12:42 AM IntoxicatedHippo: switch)
12:48 AM IntoxicatedHippo: I've found iocontrol.0.emc-enable-in, but can't actually find a description of what that does
01:22 AM Bleepshop: IntoxicatedHippo: http://www.machinekit.io/docs/man/man9/motion/
01:24 AM Bleepshop: IntoxicatedHippo: There's a "motion.enable" and "motion.feed-inhibit " what about one of those ?
01:25 AM Bleepshop: LMAO "BUGS: This manual page is horribly incomplete."
02:00 AM XXCoder: roycroft: https://youtu.be/5xIFea1ipsQ
02:00 AM XXCoder: check that out
02:26 AM Tom_L: IntoxicatedHippo, iocontrol.0.emc-enable-in (Bit, In) Should be driven FALSE when an external estop condition exists.
02:26 AM IntoxicatedHippo: I know, but what does that do? Does it inhibit everything?
02:26 AM Tom_L: yes
02:35 AM Tom_L: motion.enable IN BIT
02:35 AM Tom_L: If this bit is driven FALSE, motion stops, the machine is placed in the "machine off" state, and a message is displayed for the operator. For normal motion, drive this bit TRUE.
02:35 AM Tom_L: is another one
02:46 AM Deejay: moin
05:16 AM Tom_L: morning
05:58 AM JT-Cave: morning
12:11 PM roycroft: i found a coil of 6ga bare copper wire in my shop
12:12 PM roycroft: i can stuff that in a piece of rubber tubing to guide it down though my bandsaw column, so that should let me locate the wrench when i get down to the bottom
12:12 PM roycroft: i have an hour or so of work to do finishing the wiring and testing it, then i can dismantle and fish out the wrench
12:36 PM unterhaus: do we know who "metal musings" on youtube is?
12:41 PM Bleepshop: roycroft: Open end or box end wrench?
12:42 PM * Tom_L bets on open :)
12:42 PM Tom_L: otherwise it wouldn't have fallen in
12:42 PM Tom_L: ... you know that guy 'Murphy'
12:42 PM Bleepshop: Tom_L: The perversity of the universe is infinitie. LOL
12:43 PM Bleepshop: infinite
12:43 PM Bleepshop: As that typo helps to demonstrate. LOL
12:45 PM JT-Shop: start
12:53 PM unterhaus: I'm not sure that's Murphy, I'm pretty sure it's unterhausen's law of maximum inconvenience
12:55 PM Tom_L: JT-Shop, do you know who maintains the webpage?
12:59 PM JT-Shop: the webpage?
12:59 PM Tom_L: linuxcnc.org
01:00 PM Loetmichel: Re from my sisters Hospital bed. She is back to 100% awareness and i could understand 30% of what she tried to say. And her right side movement/coordination is getting better, too. MAN is it a relief to see progress from her stroke. The last two weeks were devastating sitting at her bed noticing her "exiting" every 5 minutes before coming back a few seconds later and dont understanding a
01:00 PM Loetmichel: single word.
01:01 PM JT-Shop: Tom_L, anyone that can push to linuxcnc https://github.com/LinuxCNC/wlo
01:01 PM jepler[m]: <Tom_L> "JT-Shop, do you know who..." <- https://github.com/LinuxCNC/wlo
01:01 PM roguish[m]: JT-Shop: JT. you're the welder dude. can propane be used to braze?
01:02 PM JT-Shop: roguish[m], won't get hot enough unless super thin material
01:02 PM roguish[m]: oh, poooo.
01:02 PM Tom_L: jepler[m], nothing big but on the community page there's a link to these logs that points to a dead end. i wasn't even aware it was there. was poking around a bit yesterday and noticed it
01:02 PM JT-Shop: which link
01:02 PM roguish[m]: what' the minimum I need? MAPP gas?
01:02 PM Loetmichel: JT-Shop: not to be a smartass here, but isnt that very dependant on which brazing rod you use?
01:03 PM Tom_L: http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc/index.html
01:03 PM Tom_L: http://linuxcnc.org/community/
01:03 PM Loetmichel: or is the silver stuff more soldering than brazing?
01:03 PM Tom_L: The chat is logged by....
01:03 PM Tom_L: it points to the old libera one i used during the server switch
01:03 PM JT-Shop: Loetmichel, yes and I just remembered the low heat rods I got a few decades ago but never tried them
01:04 PM Tom_L: i'm not sure anybody reads them but they are there
01:04 PM JT-Shop: Tom_L, I can fix that
01:04 PM roguish[m]: my drawbar has a nut with a puny spring pin holding on the long threaded rod. I want to braze the nut in place.
01:05 PM JT-Shop: roguish[m], locktite
01:05 PM roguish[m]: it's not threaded on, it's actually a slip fit on a turned section.
01:05 PM JT-Shop: ah that's different
01:07 PM roguish[m]: and I don't have an oxy-acet torch.
01:08 PM Tom_L: roguish[m], drill and put a roll pin in it
01:08 PM JT-Shop: finished
01:08 PM Tom_L: in case you ever want it apart again
01:09 PM JT-Shop: 23 minutes for that part... note to self don't select feed out when drilling deep holes lol
01:09 PM Tom_L: heh
01:10 PM Tom_L: roguish[m], then you wouldn't need a torch
01:13 PM Bleepshop: roguish[m]: I agree with Tom_L, you could probably drill out the existing hole for a roll pin or if it's a long nut like a coupling nut just countersink a hole in 1 flat and drill/thread a hole through the rod.
01:14 PM Tom_L: maybe that's what he meant by a 'spring pin'
01:20 PM roguish[m]: I appreciate all the suggestions, but I've thought of all of them. and I want to braze the thing....
01:22 PM roguish[m]: I have a neighbor with a oxy-acet. torch, but he's kinda a dweeb. may go see him anyway..... since i have loaned him tools in the past...
01:23 PM Tom_L: sounds fair
01:23 PM JT-Shop: I have this strange part on my desk... https://pasteboard.co/Pgp04esJBOFv.jpg
01:24 PM Tom_L: looks rather purpose built
01:24 PM Tom_L: holes recessed for bolt heads or same size thru?
01:25 PM roycroft: looks like a toothbrush holder to me
01:26 PM JT-Shop: I have no clue what it's for
01:27 PM JT-Shop: maybe a toothpick holder 3 per hole...
01:36 PM Tom_L: you complained about drilling holes so i figured that was the culprit
01:37 PM JT-Shop: aye that is the one that I tried feed out on deep holes
02:52 PM JT-Shop: maybe when unterhaus wanders by he can tell us what it is
03:25 PM unterhaus: looks like that part was designed by an idiot
03:25 PM unterhaus: it's part of my fixture for making bike frames. It's a weird way of making a vee block
03:26 PM unterhaus: just happened to see that method of making a vee in a precision engineering book and realized it would be great for what I am using it for, which is holding an axle
03:30 PM unterhaus: the recess in the narrow side is because it needs to be located side to side on the other part. The shallow recess is so I don't have to worry so much about the axle being seated
04:04 PM Tom_L: i must say, it looks nothing like a Vee block
04:05 PM * Tom_L feels JT-Shop is turning into a job shop for irc clients
04:09 PM unterhaus: he's just too nice to say no to machining jobs
04:10 PM XXCoder: MA meetings needed? ;)
04:10 PM roycroft: work is work
04:10 PM unterhaus: you have to imagine it's being bolted into another part at a 90 degree angle. Then you have to mentally tilt it 45 degrees
04:10 PM unterhaus: work is work, but he wants to be retired
04:12 PM * Tom_L stands on his head to make it look right
04:13 PM jdh: what kind of bikes
04:13 PM Tom_L: there used to be a guy here that made sprockets etc
04:13 PM jdh: dan-something
04:13 PM Tom_L: yeah i forget
04:16 PM Tom_L: danimal?
04:26 PM unterhaus: I think Dan might have started a company that has been growing rapidly
04:27 PM unterhaus: I remember when he used to sell chainrings on forums though
04:28 PM roycroft: was his name dieter, tom_l?
04:28 PM Tom_L: i don't think so
04:29 PM roycroft: helmut?
04:29 PM Tom_L: pretty sure it was danimal
04:29 PM roguish[m]: friend or foe, get the dough
04:30 PM unterhaus: the picture of the company's shop suggests they are no longer using lcnc
04:32 PM unterhaus: roguish[m] you can silver braze with mapp. There are air/propane torches that will let you braze with brass
04:32 PM unterhaus: oxy/propane works just as well for brazing as oxy/acetylene and it's much less of a hassle
04:33 PM roguish[m]: thanks
04:33 PM unterhaus: I never quite figured out how the air/propane torches work. They are much hotter than the torches you get in the hardware store
04:34 PM unterhaus: I get the impression they wouldn't work well for delicate work, like a lightweight bike frame
04:36 PM roguish[m]: unterhaus: are brazing your frames, or tigging?
04:36 PM unterhaus: brazing, never learned to tig
04:36 PM roguish[m]: steel? aluminum? ti?
04:36 PM unterhaus: thinking about changing that
04:36 PM unterhaus: steel
04:37 PM unterhaus: you need Tig for aluminum or ti
04:37 PM roguish[m]: I ride a steel frame. ever heard of Ben Serrota?
04:37 PM unterhaus: looking further into air/propane, you could make a frame with it
04:38 PM unterhaus: yeah, I wonder what Ben is up to nowadays. Last I saw he was designing city bikes for someone
04:39 PM roguish[m]: he's out of the Serrota business. lost the name when his business folded. last I heard he was in Colorado consulting.
04:40 PM unterhaus: are you a dentist? (serotta joke)
04:41 PM unterhaus: yeah, but I think he started a new Serotta company since the new owners folded so quickly
04:41 PM roguish[m]: I have a Serrota special edition steel. 1996 for 10 year aniversary of the 7-11 bikes. same paint job. signed by by Ben Serrota. nuber 41 or 100 limited build.
04:41 PM unterhaus: I recall he was going to restart with someone else building them because he forgot how
04:41 PM JT-Shop: https://serotta.com/about
04:41 PM JT-Shop: is that the same guy?
04:41 PM unterhaus: yeah
04:42 PM roguish[m]: that's the brand, but i'm pretty sure Ben is not involved.
04:42 PM unterhaus: I think that's his website, although someone else owned his name for a while
04:43 PM unterhaus: Bill Grove lives nearby, but he lost his company name in a lawsuit over monoskis
04:43 PM roguish[m]: maybe he is.....
04:43 PM unterhaus: He was big in the early days of mountain biking
04:44 PM unterhaus: I think he got the name back since the original company went bankrupt and they didn't really hate him
04:44 PM JT-Shop: https://benserotta.com/
04:44 PM unterhaus: In any event, I'm pretty sure you can't buy a serotta right now.
04:46 PM roguish[m]: actually I hope he got the name back.
04:51 PM roguish[m]: closed up the shop for the day.
04:51 PM unterhaus: the problem is he found out there was more money building ugly bikes for dentists
04:52 PM unterhaus: and then the enthusiasts lost interest, but eventually then the dentists lost interest
04:53 PM roguish[m]: I really like the steel tube set he uses. double butted, and squeezed, and tapered.
04:53 PM roguish[m]: the fork I have is an 'F1' his first composite fork.
04:54 PM roguish[m]: the bike drives like a porsche.
04:55 PM roguish[m]: I wish I could ride it to its potential.
05:08 PM unterhaus: it's unlikely I'm ever going to ride a bike to its potential in the future, but that's been true for a long time.
05:10 PM roguish[m]: i go out for a good time, not a hard time. fresh air, exercise, thinking time......
05:11 PM roycroft: i used to be a bicycle racer when i was young
05:11 PM roycroft: now i'm a recreational rider
05:11 PM roguish[m]: what's a lot of fun, is riding on a velodrome track..........it's a gas.
05:12 PM roguish[m]: there's one in San Jose.
05:15 PM roguish[m]: i've never raced. way to slow.
05:17 PM roycroft: i was a distance racer
05:17 PM roguish[m]: never raced bicycles..............
05:17 PM roycroft: 20km, 50km, and 100km
05:17 PM roguish[m]: used to race sail boats. a lot.
05:18 PM roycroft: i was never a good sprinter
05:19 PM roguish[m]: back in junior college. raced a kart. lay flat on your back. chainsaw 100cc motor next to your head, doing 120 mph. your ass about 2" off the pavement...... that's fun
05:38 PM unterhaus: last time I went out and rode hard, I ended up in the ER because I pulled a muscle or something. Leg swelled and everyone thought I had a blood clot
05:39 PM unterhaus: the joys of getting old
05:39 PM unterhaus: fortunately the ER was empty that day, the day before they had a crowd, up to 80 people at 2am
05:45 PM unterhaus: paypal hid friends and family
05:59 PM JT-Shop: I need to ask robinsz how he does that
06:00 PM * JT-Shop sees that the hens are all settled in so time to wander inside and call it a day
06:15 PM robinsz: so ...
06:17 PM robinsz: an RPI4 ... assuming it is just doing EMC, no other stuff, no web browsing, no nothing ..
06:17 PM robinsz: and a Mesa FPGA card via ethernet
06:17 PM robinsz: should be OK?
06:17 PM roycroft: could be, should be
06:19 PM XXCoder: shoot me
06:19 PM XXCoder: doing ugly paperwork when heavily dizzy
06:19 PM XXCoder: so much "fun"
06:28 PM robinsz: I assume most of the "hard work" is offloaded to the FPGA
06:28 PM Tom_L: yes
06:29 PM Tom_L: robinsz, you saw my rpi4 crappy yt demo of it?
07:21 PM XXCoder: roycroft: you see that video?
07:33 PM Centurion_Dan1 is now known as Centurion_Dan
07:43 PM robinsz: Tom_L: no I didn't ... linky?
07:54 PM _unreal_: ve7it, you live?
07:57 PM Bleepshop: robinsz: I'm told you can run a 7i90 via SPI from a RPi4 as well.
07:59 PM robinsz: possibly, but ive ordered ethernet, to give maximum flexibility on controllers
07:59 PM robinsz: 7i76e
08:00 PM CaptHindsight[m]: robinsz: you can browse and play videos on the Rpi4 while running LCNC
08:00 PM robinsz: thats encouraging, it will be just running EMC
08:00 PM robinsz: full screen, default startup
08:00 PM Bleepshop: I also have a lead on a way to fake a 7i9x with a different FPGA card so I can keep this low-budget.
08:01 PM CaptHindsight[m]: you just need the connection from the Rpi4 to a Mesa card to be over SPI or from the integrated NIC vs a USB ethernet adapter
08:01 PM robinsz: uSB?
08:01 PM CaptHindsight[m]: or you cam use an external microcontroller with the Rpi4
08:01 PM robinsz: the 7176e has a dedicated ethernet port
08:01 PM robinsz: you seem confused
08:01 PM Bleepshop: I was thinking NIC and use WiFi/BT for control.
08:02 PM Bleepshop: robinsz: He means on the Pi.
08:02 PM robinsz: the RPI 4 also has an ethernet port
08:03 PM robinsz: just connect the two togehter with a corssover cable, job done.
08:03 PM CaptHindsight[m]: the Rpi4 to 7i76e should be over the integrated Ethernet controller, NOT over an Ethernet controller that attaches to the Rpi4 over USB
08:03 PM robinsz: exactly
08:04 PM robinsz: Bleepshop, would it not just be easier to buy a 7i9x than develop all the verilog etc?
08:04 PM Bleepshop: robinsz: You also can't really use a hub with other traffic running from what I've seen.
08:04 PM robinsz: you seem to still be confused
08:04 PM CaptHindsight[m]: you want the UDP to be as low latency as possible
08:05 PM robinsz: just connect the two together with a crossover cable, job done.
08:05 PM CaptHindsight[m]: so avoid the use of a switch or hub
08:05 PM roycroft: when using a 7i76e the ethernet port should be directly connected to the host with no intermediate switch, and should be on a dedicated, isolated network
08:05 PM roycroft: you don't need a crossover cable
08:05 PM Bleepshop: robinsz: If you go to Mesa's site you can get it for most of their boards gratis.
08:06 PM robinsz: but that is ONLY for use with their boards
08:06 PM roycroft: pcw designed it so that you can just plug a straight, off-the-shelf ethernet able int
08:06 PM robinsz: you cant just take their code and use it on a generic FPGA board, thats theft
08:06 PM CaptHindsight[m]: it's under GPLv2 I believe
08:07 PM * Bleepshop ahnds CaptHindsight[m] a Kewpie dol.
08:07 PM Tom_L: robinsz, https://www.youtube.com/watch?v=g0OLIth_cOI
08:07 PM Bleepshop: The whole of HostMot2 as a matter of fact.
08:07 PM CaptHindsight[m]: wouldn't be theft anyway, it would be a copyright issue
08:07 PM robinsz: I thought the actual firmware for the FPGA was proprietary
08:08 PM roycroft: a copyright violation is a form of theft
08:09 PM Bleepshop: CaptHindsight[m]: That looks like one of my wiring jobs... WTH have you been smoking? ;D
08:09 PM CaptHindsight[m]: yeah lets get into semantics vs LCNC
08:09 PM robinsz: I thought the application code was GPL2, but the FPGA firmware wasnt. Anyway, whatever, given that the Mesa guys have hung out on here for decades giving good support and advice and a great product ... and they are so cheap, I think bypassing their products is a pretty shitty thing to do, but, thats just me
08:10 PM CaptHindsight[m]: https://forum.linuxcnc.org/27-driver-boards/44422-colorcnc is another FPGA working with LCNC
08:11 PM robinsz: thats fine, thats his own code on the FPGA
08:12 PM CaptHindsight[m]: his Verilog source has no license so you'll have to ask him about it
08:13 PM robinsz: anyway, whatever, I think the Mesa stuff is a bargain, this is my 3rd setup on Mesay
08:13 PM robinsz: always been excellent
08:14 PM robinsz: first 2 are PCI driven
08:14 PM robinsz: this one is the first one over ethernet
08:14 PM robinsz: and I ordered the pendant board too, to add an mpg and buttons
08:15 PM robinsz: I use a wireless pendant on the big router, but, meh, not that impressed
08:15 PM robinsz: I keep forgetting to turn it off, so the batteries are usually flat, and the range is really poor
08:16 PM robinsz: 10 feet away it can be sketchy
08:16 PM robinsz: going wired this time
08:17 PM _unreal_: god damn it 3rd time I hit the power button on my monitor with the beer bottle
08:17 PM Bleepshop: robinsz: It's like this, I'm broke, bored, a hardware tech and a magnet for random parts nobody else knows WTF to do with. And if I compile HostMot2 for the board I have I've copied/stolen F-all. This is a LinuxCNC channel. For discussions on copyright try the MPAA/RIAA Fanbois channel. ;D
08:17 PM _unreal_: its the perfect height and the button is on the bottom of the motor
08:17 PM _unreal_: mon itor
08:18 PM Bleepshop: _unreal_: And you're waving your beer bottle in time to the music?
08:19 PM _unreal_: heh
08:20 PM CaptHindsight[m]: random parts always good for art projects
08:22 PM robinsz: Bleepshop: fiar enough, if its open source, crack on. Personally, with FPGA cards starting at what, $89, I think id support Mesa, but your choice
08:26 PM Bleepshop: robinsz: I blew my budget for the year and foreseeable future on a $400 spindle/VFD kit last week. I'll have a parts budget again in April or so.
08:27 PM robinsz: What does that word mean?
08:28 PM robinsz: "budget"? Is it a custom amngst your people?
08:28 PM CaptHindsight[m]: https://www.reddit.com/r/Machinists/comments/reurtg/be_careful_around_the_lathes_no_gore/
08:29 PM robinsz: I have a "toys budget" ... which was already under strain this month ... I bought a pair of HP noise sources
08:29 PM CaptHindsight[m]: "budget" may be a sum of cash that is burning a hole in your pocket
08:29 PM Bleepshop: No, usually they yell "Charge it!" but this way I don't have to deal with repo men. LOL
08:30 PM robinsz: I only wanted one source .. but a bidding mistake in an auction, I ended up with two
08:30 PM robinsz: HP 346B 18GHz noise sources
08:30 PM CaptHindsight[m]: "budget" may be a sum of cash that your SO has allotted to you for indiscriminate purchases of hardware
08:30 PM robinsz: they're lovely ... but it emptied my cash pot
08:30 PM robinsz: then, some idiot offered me a milling machine
08:31 PM JoseIgnacioRomer: Sell one :P
08:31 PM robinsz: I may well do that
08:31 PM Bleepshop: robinsz: Damn! I was about to try to sell you an antique white/pink noise source. LOL
08:31 PM robinsz: audio?
08:31 PM Bleepshop: Yeah,
08:32 PM robinsz: these are a *bit* faster ;)
08:32 PM robinsz: basically flat from 10MHz to 18GHz
08:32 PM robinsz: my Neutrik A2 will do white/pink etc
08:32 PM JoseIgnacioRomer: For a wideband noise source i got my spindle motor
08:33 PM JoseIgnacioRomer: Brushed DC
08:33 PM * Bleepshop has piles of oddball equipment.
08:33 PM _unreal_: same here
08:33 PM robinsz: my passion is RF stuff
08:33 PM robinsz: spectrum analysers to 26.5G
08:33 PM Bleepshop: I've got a shitload of 3G/GSM cell modules.
08:33 PM robinsz: power meters to 40G
08:34 PM robinsz: sign gens to 20G etc
08:35 PM robinsz: I think most 3G GSM is on either 910MHz or 2400 MHz
08:35 PM robinsz: theres probably a bit of value in the output amplifiers to the amateur community
08:36 PM robinsz: I basically bought this mill for making components for my microwave RF obsession
08:37 PM Bleepshop: Yeah, I grabbed these as ISM modules. I've also got 315/433 modules to play with and a bunch of long range WiFi crap I need to just get rid of.
08:39 PM * Bleepshop glares at the Ubiquiti Nanobridge and random direction links.
08:40 PM robinsz: It's fun stuff to play with. I even have a set of boards to build for a 122GHz transciever
08:41 PM * Bleepshop looks up.
08:41 PM Bleepshop: Oh look, an X-band feedhorn and cavity.
08:42 PM robinsz: the old motion detector stuff?
08:42 PM Bleepshop: That's actual shop wall art here BTW. LOL
08:43 PM robinsz: I have a "bit" of power on x band
08:43 PM _unreal_: is there any stuff you guys are looking for?
08:43 PM _unreal_: robinsz, Bleepshop ?
08:43 PM robinsz: "stuff"?
08:43 PM _unreal_: I have lots of random shit I'm loking to get rid of
08:43 PM robinsz: im in UK ...
08:43 PM _unreal_: provided your in the USA
08:43 PM robinsz: and there we have it ;)
08:43 PM _unreal_: lock down city
08:43 PM robinsz: USA? yeah, I heard it was bad
08:44 PM _unreal_: non here
08:44 PM _unreal_: then again I'm in florida
08:44 PM robinsz: no lockdowns here
08:44 PM Bleepshop: robinsz: Yeah, I get them from time to time from a friend that runs an alarm company. I really scored when they had teh contract to swap all the Mag-Locks at the jail and I ended up with an 8 pack to build a magnetic vise with.
08:45 PM _unreal_: got to live mag vices
08:45 PM roycroft: unless your parts are made of wood or aluminium or plastic
08:45 PM robinsz: Bleepshop, I have a pair of transmitters for X band that are powerful enugh to be restricted under an ITAR agreement
08:45 PM Bleepshop: _unreal_: NM here. They say lockdown and we say "tell it to the tumbleweeds." xD
08:45 PM roycroft: please change the subject, thank you very much
08:45 PM _unreal_: nm?
08:47 PM Bleepshop: _unreal_: New Mexico. I'm an hour from Los Alamos where there used to be all kinds of neat shit sold as scrap.
08:47 PM robinsz: we struggle to find good stuff over here at good prices
08:47 PM robinsz: US has a lot of decent HP kit cheap
08:48 PM robinsz: I have some nice HP stuff, like 437B power meters, a vector voltmeter ...
08:48 PM robinsz: so did you know ... older HP stuff, from about 1963 onwards .. with the really nice precision analogue meters
08:49 PM robinsz: if the scale peels or flakes, you can't download one to print off and replace it
08:50 PM robinsz: because each one was custom printed for each individual meter movememnt to take acount of the individual non-linearites
08:50 PM Bleepshop: robinsz: Breakers yards in your lingo. I've pulled piles of NEMA17/23 steppers, 6mm/8mm/bushings and piles of other usefull junque out of old copy machines. Look for a factory going under and you'll get all kinds of odd crap.
08:50 PM robinsz: they literally measured each meter movement and made a custom scale
08:52 PM robinsz: Bleepshop, yeah, we have those, no real interest for me there. I hunt for lab grade test equipment
08:54 PM Bleepshop: robinsz: That's the difference between the areas. We get the lab grade gear hitting the salvage yards because their bugets say 'new gear whether the old stuff still works or not" and off to salvage the old stuff goes.
08:55 PM robinsz: possibly, certaily US eBay for that stuff is cheaper
08:55 PM * Bleepshop could have bought an entire micro-lithography line for less than the value of the scrap metal a few years ago.
08:55 PM robinsz: when I had a factory in socal, I used to assemble a boxload of stuff and ship it over
08:56 PM robinsz: but I closed that, so its harder now
08:57 PM robinsz: that was down in Ventura, back when it was nice
08:58 PM Bleepshop: What was scary was the precision microwire welder unit for assembling microchips that was plastered with BioHazard warnings and none of them were chemical hazard warnings.
08:58 PM robinsz: A die wirebonder?
08:58 PM robinsz: I'd love one of those in working condition
08:59 PM Bleepshop: Yeah, I think they used it for the rat or monkey brain chip experiments.
08:59 PM robinsz: I see them on eBay cheap enough .. but not *quite* cheap enough
09:01 PM robinsz: anyway, later
09:02 PM Bleepshop: Neat chips. Organic matter growing on a silicon substrate. Had to be "fed" a nutrient sollution in precise ammounts. Too little and they'd "starve", too much and they'd pop the chip after overgrowing the substrate.
09:07 PM roycroft: my spindle has shipped
09:10 PM _unreal_: FREAKING hell that scared me. just killed some big BIG ass spiders
09:10 PM _unreal_: got to love the tropics
09:10 PM _unreal_: those m'f'ers were eating size
09:14 PM t4nk_freenode: how's your stm32's doing, _unreal_?
09:23 PM _unreal_: have not touched them aside from solder up all of the mounting pins to the three sets that I got
09:23 PM _unreal_: ve7it, you live?
09:23 PM _unreal_: have YET to get a day off or a chance to do a damn thing
09:23 PM _unreal_: HATE IT
09:23 PM t4nk_freenode: personal problems are never nice
09:23 PM _unreal_: even this weekend. cant get away from PEOPLE. everyone needs me for something
09:24 PM t4nk_freenode: that's your own fault for being such a potent hero :b
09:24 PM Tom_L: you brought these ppl into your life though
09:59 PM _unreal_: I'm very torn. so I dont need a new cnc machine at home but I just chanced across 80% of what I need to build a new REALLY nice machine
10:00 PM _unreal_: .5" steel plate, 2 24x12" plates
10:01 PM _unreal_: two 1/4" x 20x24" plates APROX, VERY big angle aluminum .5mm thick
10:01 PM _unreal_: .5" thick
10:01 PM _unreal_: and on and on
10:01 PM _unreal_: I have 2040 extrusion
10:01 PM _unreal_: that I could use for the X axis
10:01 PM _unreal_: just need to order for the Y axis. I have rails I could use for Z
10:02 PM _unreal_: I more or less have most eerything I need
10:02 PM _unreal_: I really want to use the BLDC motors but I do have the DC servo setup that is ve7it design. never got it working but I think that was other issues
10:03 PM _unreal_: What I really need is a machine that has a work area that is equal to or better then my laser etcher. If I have something like that I can then mill what I need and transfer it to the laser. or visa versa
10:04 PM _unreal_: but it would be nice to have a robust machine
10:04 PM _unreal_: at home
10:04 PM _unreal_: I'm thinking belt drive
10:05 PM _unreal_: I'd like to go lead screw but its the idea of speed
10:06 PM _unreal_: the BLDC's and the dc servos can both do over 1k RPM
10:06 PM _unreal_: full torque
10:06 PM _unreal_: both are rated for about the same specs
10:37 PM roycroft: do any of you mount an air nozzle on your router spindle to help clear chips?
10:38 PM XXCoder: that was in my future plans
10:39 PM XXCoder: blow it towards collector
10:39 PM roycroft: yes, that's what i'm thinking
10:39 PM XXCoder: blown and vacuumed up. havent thought out design fully, was planning 3d printing designs to test em in long term plans
10:42 PM roycroft: it could save a tool change
10:42 PM roycroft: i was thinking of using a spiral down cutter to start cutting an outline, so that the top of the part is clean, and then swapping for an up cutter to finish, for chip clearance
10:43 PM roycroft: but if i can clear with air, i may be able to use the down cutter for the entire operation
10:43 PM roycroft: the spoil board would help prevent tearout at the bottom of the cut
10:43 PM roycroft: theoretically
10:44 PM roycroft: i am thinking i should at least accomodate an air nozzle when i desing my z axis, whether i install one as part of the initial build or not
10:44 PM Bleepshop: roycroft: I've got one I use all the time at work and I'm running 2 extra 6mm tubes to my cable chain here while I've got it open for air and coolant.
10:44 PM roycroft: does it do a good job of clearing the chips?
10:45 PM roycroft: and does the extractor get all the dust it blows out?
10:45 PM Bleepshop: I had to open it to add the water cooling lines for teh new spindle.
10:45 PM roycroft: my spindle is water cooled
10:45 PM roycroft: i was thinking about trying an air-cooled spindle for the router, but decided to get another water-cooled one
10:46 PM Bleepshop: Clears chips beautifully. The dust collection for that machine sucks and not in a way you'd give $20 for in Tijuana. LOL
10:48 PM Bleepshop: I'm about to add more nozzles to direct the chips toward the extractor and fix the backwards connection in the main ductwork.
10:52 PM Bleepshop: roycroft: Although I'm also using a 4 flute Binstak 2" surfacing/0.5"slotting bit and hogging off 0.125-0.200 single pass in Oak so I'd need a chained down F-22 @ 65% throttle on the other end of the duct anyway. LOL
10:52 PM roycroft: i'm still trying to sort out what kind of dust shoe i want to put on the spindle
10:52 PM roycroft: yeah, i'm likely not going to be making that much dust
10:54 PM roycroft: i'm hoping that i can use a 1/8" cutter as my primary tooling
10:54 PM Bleepshop: roycroft: One of these at ~400IPM with 14HP behind it... Muwahahaha... https://www.amazon.com/CNC-Router-Bit-Wood-NITOMAK/dp/B07VCZVKL7
10:55 PM * Bleepshop forgot the spinning at 16K RPM bit.
10:56 PM roycroft: i am currently working on tramming adjustment options
10:57 PM Bleepshop: But, considering where I work I've begun to assume that any nad every thing may be spinning at a high rate of speed untill I've poked it with a stick.
10:57 PM XXCoder: that things not bad hmm
10:58 PM XXCoder: nice for flattening bed
10:59 PM Bleepshop: Hi-frequency flourescents and spinning things can be a bad mix if things sync up wrong. Saw blade can look totally stationary and shred a 2x4.
11:00 PM XXCoder: shop I used to work at switched to leds
11:04 PM Bleepshop: Going to try feeding filtered DC to a set of those on the big 6 head molder and pray that none of the heads manage to syncronise to the LEDs flash rate.
11:05 PM XXCoder: leds do that only if its very cheap
11:05 PM XXCoder: ie its not fully rectified whatever thats spelled
11:08 PM Bleepshop: I'm looking at using a switching supply to get to 12V and then a L/C filter feading a 0.5F of capacitor to feed the lighting rails. Same filter I use on my car stereo installs to kill all the alternator and motor brush noises.
11:09 PM roycroft: yeah, a lot of led fixtures, especially the cheap ones, are only half wave
11:12 PM Bleepshop: 30Hz/60Hz/120Hz are the least of my worries. 6" molder head covered with 120+ indexed carbide teeth spinning at 10K+ RPM.
11:15 PM Bleepshop: With a 20HP drive motor that makes it chew 5mm deep in Oak single pass. Scary shit if the LEDs base frequency matches up.
11:20 PM _unreal_: I plan on having a +air for my new machine
11:33 PM Bleepshop: Note to self: Don't tell another Ru-Paul Charles fan that I'm working on my drag chain...
11:34 PM Bleepshop: They were quite disappointed... LMAO
11:57 PM roycroft: hello, sailor!